MCCB for line protection — 160 A, 4-pole, high interrupting capacity
The Siemens SENTRON 3VA1116-5EF42-0JC0 is a 4-pole molded case circuit breaker (MCCB) designed for line protection, rated 160 A at 40 °C and carrying a breaking capacity of 187 kA at 240 V AC. At 415 V the interrupting rating is 121 kA, dropping to 75.6 kA at 440 V and 17 kA at both 500 V and 690 V. The rated insulation voltage is 800 V. The 160 A frame holds its full rating up to 50 °C; above that it derates linearly to 150 A at 70 °C. That means in a warm panel — say 55 °C — you still get 158 A continuous, which is useful for a feeder that runs near its limit. This MCCB ships with a shunt trip (STL) release and two factory-fitted auxiliary switches (HQ design). No undervoltage release, no ground-fault monitoring, no communication module — it is a straight line-protection breaker for distribution panels where remote trip via a control signal is needed.
Panel fit and integration
The breaker measures 130 mm high, 101.6 mm wide, and 70 mm deep. It mounts on a DIN rail or directly to a backplate via the screw terminals. The 4-pole width (101.6 mm) is the standard 4-module footprint for this frame size — check gland-plate cutouts if retrofitting into a panel that was laid out for a 3-pole unit. Power loss at full rated current is 38 W maximum. In a sealed enclosure with multiple breakers, that heat needs to be factored into the thermal budget.